Gun.



C. MIRMILLO.

GUN.

APPLICATION FILED OCT. 24, I916 Patented July 9, 1918.

3 5HEETS-SHEET I IIVVENTOR Charla/Wkwzil/o ATTORNEY CK MIRMILLO.

GUN.

APPLICATION FILED OCT. 24, l9l6.

Patented July 9, 1918.

3 SHEETS-SHEET 2.

z I u C. MIRMILLO.

7 sum. APPLICATION FILED OCT. 24.1916- Patented July 9, 1918.

3 SHEETS-SHEET 3.

I N I/ E N TOR ilaricv 7'77 77221770 UNrTnn sTATEs PATENT orricn.

GUN.

Application filed October 24, 1916.

To all whom it may concern:

Be it known that 1 CHARLES MIRMJLLO, citizen of the United States, residing at Oakland, in the county of Alameda and State of California, have invented certain new and useful Improvements in Guns, of which the following is a specification.

This invention relates to improvements in guns and more particularly to a side loading rifle which enables cartridges to be used with projectiles of any size.

The principal object of my invention is to improve the construction of the breech mechanism whereby the gun may be loaded and the empty cartridge case ejected from the side and also to construct the breech mechanism that it may resist the powerful forces due to high explosive charges which are used with projectiles in cartridges.

Another object is to provide simple and effective recoil mechanism, an improved firing pin arrangement and shell ejecting means.

With these and other objects, which will be brought forth in detail in the specifi cation, in view, my invention consists in the novel arrangements and combination of parts herein described and more specifically pointed out in the appended claims.

Referring to the accompanying drawing forming a part of this specification,

Figure 1 is a View in side elevation of the improved gun.

Fig. :2 is a top planview of the same.

Fig. 3 is a longitudinal sectional view through the breech end of the gun.

Fig. 4L is a view in horizontal section of the breech at the loading chamber.

Fig. 5 is a view in rear elevation of the breech block.

Fig. 6 is a View in rear elevation of the breech block with a bearing plate removed.

Fig. 7 is a view in section through the rear portion of the gun showing the breech block in position. I

Fig. 8 is a view in section through the barrel at the loading slot showing the means for withdrawing the shell from the firing chamber.

Fig. 9 is a view in side elevation of the cartridge used in the gun.

Fig. 10 is a view in section through the base end of the cartridge case.

Referring to the corresponding parts of the several views by the same numerals of reference, 1 denotes the gun barrel having Specification of Letters Patent.

Patented July 9, 1918.

Serial No. 127,361.

rifled bore 2 and for convenience of manufacture this barrel is made in two sections, the rear section being indicated by 2. These sections are in screw threaded engagement with the yoke member 3, which has a longitudinal extending rib 1, which in turn is provided with laterally extending guides 5. These guides are slidably mounted in suitable Ways 6 in the upper part of the recoil chamber casing 7. This casing is held in a U-shaped yoke member 8 having trinmions 9 by which the gun is pivotally mounted in a suitable carriage, a portion of which is indicated at 10.

The recoil chamber denoted by 11, is cylindrical in outline and has the removable caps 12 and 13 at each end thereof. Within this chamber is a suitable compression spring 14 abutting at one end against the cap 12 and having on its other end a head 15. In the upper side of the chamber casing is alongitudinally disposed slot 16 and through this slot extends an arm 17 formed on the lower portion of the holding member 3. This arm contacts with the head 15 so that when a gun is fired the recoil causesthe arm 17 to move rearwardly in slot 16 against the compression spring 14.

The breech block is denoted generally by S0 and consists of the cylindrical portions 18 and 19, the former being smooth 011 its outer surface, while the latter is provided with the segmental'screw threads 20. These screw threads are longitudinally slidable in the slots 21 (Fig. 7,) whereby the breech block may be locked by a fractional turn. On the rear of'the screw threaded portion 19, is provided an enlarged collar '23 having an annular recess 2 f upon which is revolubly mounted the ring 25. This ring being rovided on one side with a hub 26 in w ich is keyed a rod 27. This rod on the rear portion is provided with a toothed rack 28 arranged to engage a toothed pinion 29, keyed to shaft 30, which shaft is revolubly mounted in a yoke 31 attached to the rear end of the gun barrel. Upon both sides of this shaft are attached operating wheels 32 having one or more handles 33, as shown in Figs. 1 and 7. The portion 7 of the gun carriage is provided with a longitudinal opening 34: in which the rod 27 is adapted to slide. This rod and opening being of sufficient length to provide a guide whereby the breech block is held in parallel relation to its bore while being moved in or out. Member 25 is held in the grooved shoulder 24: by meansof the ring 36, thisring having ahandle 37, enabling the breech block to be turned in the bore to lock it in position.

The shell chamber is denoted by 38, the ejectionchamber by 39,! and 40' denotes athe cartridge case after the projectile has:

been fired. a This means consistsofa block I 41 slidably mounted on a rod 41 and moved longitudinally' by means of the quick acting screw 42. This screw is pivotally mounted in bearing: plates 43- and 4A and within the latter has keyed to it the toothed beveled pinion l5r This pinionmesheswith the corresponding toothed gear 46, having handles 4:7, by which itmaybe turned. Extending from-101001143 is a flat arm e8, this arm being bentinwardly; to-position within the slot 40 and on its inner end hasa segmental curve 49,01 a radius equal to the diameter or: the cartridge shell back of thebead.

The-firing". mechanism consists of the rod 50 extending throughout the length of the portions 18-and 19 havinga collar 51. The rear end of this rod is attached to arack gear. 52, which isrectangular in shape and slidably mounted in a similarly shaped opening52 in the blocks 53- and 53. Between" the collar 51 and rack member 52 is a circular hole 54' wherein is a spring 55,, the

forward end abutting against collar 51 and the rear end abutted against the shoulders formed by the'rectangular opening 52 and the: circular hole 54. Pivotally-:mounted at the rear end of the breech block is a shaft --having an operating wheel, 61 with suitable'handles 62-andon this shaft is-keyed a toothed gear adapted to meslrwith the teeth ot rack 52. Pivotally mounted? under this rack isa trigger arm 63 =having afinger 64 which is'adapted to enter-a slot 65' formed oirthe-under's'ide: ot the rackbar 52.

The cartridge consists' ofthe brass shell casing 7 0 and rojectileTlQ 'Theshell cas- 7 ing is screwed- 01" welded to the cap end of the shell 75,- which isprovided with an 'an' nular head 73. 7 4' denotes thepri mi ng cap, placed in small block 7 '5, which in turn is removably inserted in 72 7 .Theoperation is as follows:

To load the gun the breech block so: is

withdrawn by turning wheels 32, the block l1 beingpositioned as shown in Figs. 1 and 2. The cartridge is; then inserted through slot 4C0 and the breech block run-in by turni'ng wheels 32 in the reverse direction, which causes the end of the portion 18 to push the cartridge into the firing chamber 38. The

firing pin is then set by turning the handle 62 so as to withdraw the rack 52 against spring 55 until the same is positioned 'so that thefinger 64 ofthe trigger arm maybe inserted in slot 65, the breech block in the meantime being rotated by' means of arm; 37-50 that the segmental screw portions engage and lock the block in position. Trig ger 63 is then pulled in a clockwise direction. releasing finger 6 1 and permitting, the rod 5 0 to be propelled forward under the action of spring 55.v The end of the rod strikes the cap 7 5'andfires the. charge within thecartridgeshell. The breech block is then unlocked and withdrawn by rotatinghandle 37; Blocked is then moved rearwa-rdly by meansjofthe handles 7, and as the 'bead 73 of. the cartridge shell is positioned back 7 l of the. segmental end 49, theshell is pulled backinto the chamber 18. I The block &0 is then moved into its forward positionand thev shell ejected by moving; inwardly the lever rm 41. This leavesth e' various parts of the gun in position for reloading.

While I have shown the preferred embodi mentof my invention it may be understood that minor changes may be made in the; details of the design without departing from the spirit thereof j l V p V I claim as new and wish tocover by Letters Patentf:- i V 1. A gun comprising a'barrel having a v firing chamber-, a loading chamber back of said: firing chamber and having a slotex tending through the side ofsaid barrel to permita cartridge to be placed in said-load ing chamber, a breech iblock having a forward portionadapted to push said, cartridge into said-firing chamber, a block slidably mounted adjacent Said slotandanciarm extending from said block into said loading chamber, the end of said arm beingadapted it from. the: firing chamlo'er,- and an ejecting lever-pivotally mounted onv the outside of said barrel, and having a part adapted to be man extending from said block through said slot and normally lying at the rear end of the firing chamber and having a notched end adapted to engage the rear end of said car- 15 tridge, and operable means for moving said block axially of the loading chamber, Whereby said arm will Withdraw the cartridge from the firing chamber.

In testimony whereof I afiix my signature. 20

CHARLES MIRMILLO.

Copies of this patent may be obtained for five cents each, by addressin the commissioner of Patents,

Washington, D. (3. I r 

